The “display” property is the most important CSS property for controlling layout. “display: none;” is commonly used with JavaScript to hide and show elements without deleting and recreating them. Hiding an element can be done by setting the “display” property to “none”. The element will be hidden, and the page will be displayed as if the element is not there.

Similar to CSS property “display:none”, the “hide()” jQuery method also hides the selected elements. Hidden elements will not be displayed at all.

This negatively impacts viewability which advertisers are starting to adapt to as an important metric when buying traffic.

Step 1: Check random pages if this error still pops up.

Step 2: Right-click on the page and click “Inspect”.

Step 3: Click the box with the cursor icon to select elements on the page.

Step 4: Look for the ad unit in question and click on it.

display ad

Step 5: Under the “Elements” tab, you should see “Styles” section.

Step 6: Look for anything that says “display:hidden” or “display:none” or “ .hide()”.

elements and styles screenshot

Step 7: Once confirmed, advise the publisher to stop using it on ad unit divs.

Step 8: If the publisher refuses to do as advised, remove the ad unit from the configuration; or create a separate configuration without the hidden ad unit in it and provide implementation instructions to the publisher.


Need more help? Send us an email at or log in to PubGuru App and use the Chat widget for immediate support.

Back to Notification Center